Cover crops included in a crop rotation can help manage nitrogen and crop residue cover on the soil. A low C:N ratio cover crop containing legumes (pea, lentil, cowpea, soybean, sunn hemp, or clovers) and/or brassicas (turnip, radish, canola, rape, or mustard) can follow a high C:N ratio crop, such as corn or wheat, to help the corn and wheat residues decompose, allowing nutrients to become available to the next crop.
